A. number of pole pairs
B. number of poles
C. number of parallel paths
D. number of commutator segments
A. electromagnets
B. permanent magnets
C. both A. and B.
D. none of the above
A. double the number of poles
B. same as the number of poles
C. half the number of poles
D. two
A. magnetic flux, direction of current flow and resultant force
B. magnetic flux, direction of motion and the direction of e.m.f. induced
C. magnetic field strength, induced voltage and current
D. magnetic flux, direction of force and direction of motion of conductor
A. demagnetisation only
B. cross magnetisation as well as mag¬netisation
C. crossmagnetisation as well as demagnetising
D. cross magnetisation only
A. Series field
B. Compensating field
C. Inter pole field
D. Shunt field
A. negligibly low
B. equal to no-load terminal voltage
C. more than no-load terminal voltage
D. less than no-load terminal voltage